129314987 has 2 divisors, whose sum is σ = 129314988. Its totient is φ = 129314986.

The previous prime is 129314959. The next prime is 129314989. The reversal of 129314987 is 789413921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129314987 - 2¹⁰ = 129313963 is a prime.

Together with 129314989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (129314989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64657493 + 64657494.

It is an arithmetic number, because the mean of its divisors is an integer number (64657494).

Almost surely, 2^129314987 is an apocalyptic number.

129314987 is a deficient number, since it is larger than the sum of its proper divisors (1).

129314987 is an equidigital number, since it uses as much as digits as its factorization.

129314987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 44.

The square root of 129314987 is about 11371.6747667175. The cubic root of 129314987 is about 505.6883558027.

The spelling of 129314987 in words is "one hundred twenty-nine million, three hundred fourteen thousand, nine hundred eighty-seven".